Teleportation Circle, Eternal Witness, and Temporal Manipulation

Prerequisites

• Teleportation Circle on the battlefield
• Eternal Witness on the battlefield
• Temporal Manipulation in hand
• each turn available

Steps

1. Cast Temporal Manipulation by paying , causing you to take an extra turn after this one
2. At the beginning of your end step, Teleportation Circle triggers, blinking Eternal Witness
3. When Eternal Witness enters the battlefield, it triggers, returning Temporal Manipulation to your hand from your graveyard
4. Repeat each turn

Results

• Infinite turns